23) “Cool Jazz” emerged when ［A］ tenor saxophonist Lester Young， guitarist ［B］ Charlie Christran，and another ［C］ musicians made major changes ［D］ in jazz improvisation.
2. 不定代词much, (a) little, less, least, a great deal／amount of修饰不可数名词； many, (a) few, both则修饰可数名词的复数形式, a great variety of后面接可数名词或不可数名词均可， every, each, one, none则修饰单数名词；all可修饰可数和不可数名词，但修饰可数名词时须用复数
24) At one time ［A］ many person ［B］ believed ［C］ that some forked twigs had supernatural powers ［D］ .
25) The general sales tax has been ［A］ a major source of income for state governments， much ［B］ of which derive more than half ［C］ of their ［D］ budgets from it.
26) Electing ［A］ honest and competent individuals to public office ［B］ is really ［C］ the responsibility of every peoples ［D］ in a democratic society.
3. 人称代词与名词的呼应 人称代词I(me), he(him), she(her), it都是代替前边的单数名词，而they(them), we(us)则是代表复数的，you既可代表单数，也可代表复数，但表示泛指的时候，我们汉语用“我们”来表示，而英语则用“he”或“one”来表示。
27) The leaves of the red maple(槭树) are highly ［A］ poisonous to horses and when ingested ［B］ can kill ［C］ it ［D］ within fifteen hours.
28) The continental divide refers to an imaginary line in the North American Rockies that divides ［A］ the waters ［B］ flowing into ［C］ the Atlantic Ocean from it ［D］ flowing into the Pacific.
29) Mahogany(桃花心木) is often considered ［A］ the finest cabinet wood ［B］ because they ［C］ has most of the qualities desired ［D］ for furniture making.
4. 物主代词与名词的呼应 my, our, his, her, its, their要与代替的名词在数上一致
30) The welfare department, as well as the other social services, will have budget cut.
［A］ their
［B］ his
［C］ its
［D］ our
31) Women have always ［A］ worked in the United States，and hers ［B］ work has been ［C］ indispensable in the expansion ［D］ of American industry.
32) Dolphins are warmblooded; that is， its ［A］ body temperature always stays ［B］ about the same， regardless ［C］ of the surroundings ［D］ .
5. 反身代词与其所代成分间的呼应
33) Behavior modification techniques work ［A］ best ［B］ with problems that manifest itself ［C］ in overt(公开的，明显的) actions ［D］ .
34) Since the beginning of recorded history humans have been known ［A］ to seek ［B］ good health and the means to ［C］ cure itself ［D］ of illness.
6. 指示代词与所代名词间的呼应 this和that指代单数名词或不可数名词，而one只指代可数名词单数。these、those和ones指代复数名词(而且those还可作先行词，可以有定语从句，those表示“那些人”)。one…another表示“一个……另一个”；the other表示两者中的另一个；the others表示一个整体中的“另外一些”。one和those后边还可以跟who引导的定语从句，one代替名词单数，those代替名词复数
35) She invited all who had been in her class last term.
［A］ that
［B］ those
［C］ one
［D］ ones
36) These ［A］ problem had to be ［B］ solved，so he had to work ［C］ overtime for five consecutive ［D］ days.
37) An internationally famous ballerina(芭蕾舞女演员) ［A］ ， Maria Tallchiaf demonstrated ［B］ that the quality of ballet in the United States could equal those ［C］ of the ballet in Europe ［D］ .
四、例题解析
1) A错。应改为单数名词proportion，因前面有不定冠词“a”。
2) D错。改为lamp。
3) B错。应用单数名词star，因为前面有冠词“a”，尽管它被几个词所修饰，但仍要用单数。
4) C错。本句的主语是“a typical farm”，属于单数第三人称，而本句的谓语动词是cover(占地)，所以应改为与主语相对应的动词形式covers。
5) A错。应改用is，因为主语为单数第三人称“the Petrified Forest”(石化林)。
6) A错。谓语是“is”，与之相呼应的须是单数名词或不可数名词，所以应将many改为much。
7) C错。根据上下文，supporter(支持者)应用复数supporters。
8) D错。应把foot(英尺)改为复数形式feet，因前面有数词thirty。
9) D错。应改为books，因前面有数词two，故名词应用复数形式。
10) A错。应改为复数名词years，因前面有数词100 million。
11) B错。six显然不能和单数名词element(元素)连用，故应将其改为